/usr/lib/python2.7/dist-packages/notmuch/version.py is in python-notmuch 0.26-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # this file should be kept in sync with ../../../version
__VERSION__ = '0.26'
SOVERSION = '5'
|